Sitelinks are hyperlinks to website subpages that appear under certain Google listings in order to help users navigate the site. The site owner cannot add any sitelinks; Google adds them through its own secret automated algorithms.If you have a Google Adwords program you can create campaign and adgroup level sitelinks.

The links shown below some of Google's search results, called sitelinks, are meant to help users navigate your site. Our systems analyze the link structure of your site to find shortcuts that will save users time and allow them to quickly find the information they're looking for.